Mechanism for cutting pile loops in the manufacture of coarse pile fabrics.



E. J. BNTWISLE. MECHANISM FOR CUTTING IILE LOOPS IN THE MANUFACTURE OF GOARSE PILE FABRICS.

APPLICATION FILED OUT. 1'], 1912.

1,0725%2, Patented Sept. 9, 1913,

2 SEEETS-SHEET l.

COLUMBIA PLANOGRAPH Cc..wAsmNG'roN. D. c

E. J. ENTWISLE. MECHANISM FOR CUTTING FILE LOOPS IN THE MANUFACTURE OF GOARSE PILE FABRICS.

APPLICATION FILED OUT. 17, 1912.

1,072,842, Patented Sept. 9, 1913.

2 SHEETS-SHEET 2,

COLUMBIA PLANOGRAPII co..wASmNGToN. n. c,

ionrrnn ,srn'rns rarnn'r onnron ER NEST JAMES ENTWISLE, OF LONDON, ENGLAND.

MECHANISM FOR CUTTING FILE LOOPS IN THE MANUFACTURE OF COARSE PILL-E FABRICS.

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Specification of Letters Patent.

Patented Etept. 9, 1913.

Application filed October 1'7, 1912. Serial No. 726,218.

To all whom t may concern:

Be it known that I, ERNnsT JAMns EN- TWISLE, a subject of the King of Great Britain, residing at 61 Selby road, Victoria Docks, London, England, textile engineer, have invented certain new and useful Improvements in Mechanism for Cutting Pile Loops in the Manufacture of Coarse Pile Fabrics, and of which the following is a specification.

The object of the present invention is to provide improved means for cutting the pile loops in the manufacture of coir mats and other coarse pile fabrics, and according to this invention, an endless chain is employed, carrying a series of knives arranged in such manner that the said chain carrying the knives can pass over and be driven by sprocket wheels, the edges of the knives acting progressively during the travel of the said chain to cut the pile loops, all as hereinafter described.

The knives which are carried by the chain are given a wave-like action from one side of the weaving machine or loom to the other side, in order to allow the knives to perform the cutting operation partly owing to their travel and partly to their progressive approachment to the pile loops to be cut, and this two-fold action is secured by the continuous travel of the chain carrying the knives and by the chain being oscillated during the cutting operation. 7

. According tothis invention, the knives are adapted to" be raised and lowered to effect an undulatory or wave-like cutting action to cause the knives to sever the pile loops; this motion being effected by displacement of the sprocket wheels located at opposite sides of the machine, or displacement of one of them, thereby bringing the knives carried by the said chain alternately into contact with the pile loops and away therefrom. Thus for instance, the shaft carrying one of the sprocket wheels at one side of the machine and a support for the chain may be advanced and retired to and away from the pile loops by cam action, so timed as to raise the knife chain with a rocking movement atthe moment the pile bar is in its correct position.

In the drawings: Figure 1 is a diagrammatic view wherein the knife-carrying chain. is arranged so as to be raised to cut the pile loops in a machine for weaving single fabric. Fig. 2 is a front elevation, showing a lifting gear suitable forraising the said knife-carrying chain in a wave-like manner. Fig. 3 is an elevation, and Fig. 4: a plan of meansby which the knives may be supported and guided. Fig. 5 isa diagrammatic view, showing the knife-carrying chain applied to a machine weaving double fabric. Fig. 6 illustrates a modified form of mechanism for raising the knife-carrying chain.

Referring to Fig. 1, a portion of the woven fabric is indicated, in which the pile bar a is shown having formed thereon the uncut loops of the pile next to the shed Z), the shuttle being indicated at c and the reed at d; the knife chain 6 and the knives f are so positioned that the said knives f are directly below the pile bar a and are capable of being raised to cut the pile loops. The pile bar a upon which the pile loops are formed is inserted while the knives are out of operation.

As shown at Fig. 2, the endless chain c has secured to its links knives f, and the chain is mounted on two sprocket wheels 9, h. The shaft g of the sprocket wheel 9 is driven by a pair of bevel wheels or other convenient mechanism say from the loom shaft, and this shaft 9 is mounted in stationary bearings, while the sprocket wheel h is capable of being raised and lowered along with the rear end of a supporting and lifting bar 2', the forward end of which bar 2' is also capable of being raised and lowered, and which bar retains the knives in their cutting position for the desired period. This raising and lowering of the bar t and sprocket h is effected by two eccentrics y 71: which are rocked by cams Z Z through levers m m and rods n n, the eccentrics being arranged so as to operate one in advance of the other in order to give an undulatory motion to the chain and knives. The eccentric is connected to the forward end of the bar '5 by means of a rod 7' The cams Z Z are timed to operate the eccentrics to raise the knife chain as described directly the pile loops are firmly bound into the groundwork of the fabric. i

As shown at Figs. 3 and i, the knife f is fixed by riveting to one of the side plates or links of the chain, and in order to take any sidewise strain and prevent the possible tilting of the knives during the cutting operation, supporting rollers e are mounted on the knife near the base the side opposite to the chain, the said supporting rollers running on the top of the lifting bar is.

Inqapplying the invention to a machine for weaving double fabric as shown in Fig. 5 the fabrics when the pile loopsare out are led over a pair ofv rollers 0 p with spiked surfaces, by means of which a better hold is obtained on the fabric, the knives f operating on the double fabric between the rollers to sever the pile loops after which the fabrics pass over the rollers 0 7) in opposite directions. As illustrated in this figure one of the sprocket wheels for carrying the knife chain is seen at q mounted on a shaft 1 driven by suitable gearing. In this arrangement the knives f can be maintained in a plane at right angles to the pile loops by suitable guides, and the chain is then as before described intermittently moved in an undulatory manner toward the loops to be out.

A modified form of the knife chain lifting mechanism is shown in Fig. 6 wherein a cam s on each side of the machine operates a cam lever t connected directly to the shaft on which the sprocket wheel is mounted.

What I claim as my invention and desire to secure by Letters Patent is z- 1. Mechanism for cutting the pile loops of coarse pile fabrics; comprising 'in combination a chain adapted to be traversed adjacent to and in the direction of a row of pile loops to be cut, a series of knives carried by said chain, traversing means operative on said chain and means operative on said chain and adapted to intermittently move the chain toward and away from the pile loops substantially as set forth.

2. Mechanism for cutting the pile loops of coarse pile fabrics; comprising in combination a chain adapted to be traversed adjacent to and in the direction of a row of pile loops to be out, a series of knives carried by said chain, a sprocket wheel supporting said chain at one end of the traverse, a second sprocket wheel supporting said chain at the other end of thetraverse and mechanism for moving one of said sprocket wheels toward and away from the pile loops to be cut substantially as set forth.

3. Mechanism for cutting the pile loops of coarse pile fabrics; comprising in combi nation a chain adapted to be traversed adjacent to and in the direction of a row of pile loops to be cut, a sprocket wheel supporting said chain at one end of the traverse, a second sprocket wheel supporting said chain at the other end of said traverse, an eccentric support for the axle of one of said sprockets and mechanism operatively connected with said eccentric to effect the thereof and upon oscillation of said eccentric for causing said from the pile loops for the purpose set forth.

1-. Cutter for fabrics; comprising in combination an endless chain, knives lixed to said chain at inter a reciprocatory mechanism operative to movethe saidendless chain in the plane containing the same for the purpose set forth. i r V 5. Cutter for pile loops of coarse pile fabrics; comprising in combination an endless chain, knives fixed to said chain at inter als, driving means for said chain, abar arranged to support one of the flights of said endless chain, "and mechanism operative upon said bar to rock the latter for the purpose set forth. r

6. Cutter for pile loops of coarse pile fabrics; comprising in combination a traversable chain, knives fixed to said chain at intervals, sprocket wheels supporting said chainat opposite ends of its traverse, and reciprocatory mechanismsadapted to operate upon said chain to move the latter to pile loops of coarse pile 'als, driving means for said chain, and

ward and from the row of pile loops to be 7 cut said mechanisms havinga timed relationship substantially as set forth. 7 V

7. Cutter for pile loops'of coarse pile fabrics; comprising in combination an endless chain, knives fiXed to said chain at intervals, driving means for said chain,a bar arranged to support one of the flights of said endless chain, an eccentric at one end of said bar to support said end, mechanism to effect the oscillation of said eccentric for causing said end of bar to be advanced toward and retracted from the pile loops to be cut, a second eccentric operatively connected to opposite end of said bar and adapted to o'perateon said end ofsai'd 'bar to advance the'latter toward and retract it from said pile loops in advance of the-first mentioned end, and mechanism to effect the oscillation of said second eccentric substantlally as set forth.

8. Cutter for pile loops of coarse pile fabrics; comprising in'combination a chain adapted to be traversed fldJfdCQlllltQR-Ild 1n the dlrection'of a row of pile loops to be out, knives fixed at-intervals to side plates of links of said chain on one side thereof, a bar in supporting relation with said chain, rollers on said knives to run on said bar to prevent sidewise movement of said knives and mechanism operativeiupon said'bar to rock the latterrfor the purpose set forth.

9. Cutter for pile loops of coarse pile fabrics; comprising in combination a tra ersable endless chain, knives fixed to said chain at intervals, sprocket wheels supporting said chain at opposite ends of its traverse, an eccentric supporting the axle of one of said sprockets, a bar to support one of the flights of said endless chain and operatively connected at one end to said sprocket supporting eccentric, a driven cam, a lever adapted to be reciprocated by said cam, a connecting rod between the free end of said lever and said eccentric to impart oscillating movement to said eccentric to cause said sprocket and said end of said bar to be advanced toward and retracted from the pile loops to be cut, a second eccentric, a rod connection between said second eccentric and the opposite end of said bar, a second driven cam adapted to operate in timed relationship wlth aforesaid cam, a lever adapted to be reciprocated by said cam and a connecting rod between the free end of said lever and said eccentric to impart oscillating movement to said eccentric to cause said opposite end of said bar to be moved toward and retracted from the pile loops to be cut in advance of the other endof said bar, substantially as set forth.

In witness whereof I have hereunto set my hand in the presence of two witnesses. ERNEST JAMES ENTWISLE.

Witnesses:

GRIFFITH BREWER, WILLIAM A. MARSHALL.

five cents each, by addressing the Washington, .D. G.

Copies of this patent may be obtained for Commissioner of Patents, 

